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Sunday, July 3, 2011

Preparations

Received the Heads back from UCC where Ronna in master fashion prepared and TIG welded the material required to fill the dimples, he also cleaned out the mysterious fillings between the seats on both heads (hard soldered) and filled that as well. After some reasoning and analysis toghether with experience it turned out that the FHP Castings are weldable, hence I turned away from trying powder welding and it came out very nicely. So next step was heading to the holy grail of restorations and Cala´s High Performance, and we had a great day and a half (and a great lunch too), finishing fixtures which would accept both NOS heads with Tins installed as well as these heads which caused some adjustments to the height and location in the Sunnen machine having an added straight exhaust tube. The fixture required for the lathe was also cleaned up. Cala`s Machining capability and absolute requirements for preregusites in the set ups, fixturing and dimensional control is what´s needed restoring these one offs, New tins are on the way and we are looking at installing as original with the guide holding the tin, but one step at a time and now it´s machining, Guides, Seats, Valves ......(the bottom picture is the ´rear head from "Mother", the other pic´s are a pair of original).